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Calculation of Machine’s Electricity Consumption for Costing

Historically, horsepower was the first power unit emerged and widely used around the world. In the middle ages, a horse was one of the most important elements of almost every household, that is why starting from the 18th century, with the development of first steam engines, a horsepower was chosen as a great comparative unit of power.

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In our times, there are a few types of horsepower are used. In those countries where the Imperial system is practiced, mechanical or imperial horsepower is used, which is approximately equal to 745.7 watts. Electrical horsepower is a unit that is equivalent to 746 watts. It is usually used for rating electric motors and engines. There is also metric horsepower which has been used in Europe since the beginning of the 19th century. It is equivalent to roughly 735.5 watts.

Horsepower to Kilowatts Calculation

1 hp = 33,000 ft•lbf / minutes

1 hp = 33,000 ft•lbf / 60 seconds

1 hp = 550 x 0.3048 x 0.453592376 m•kgf/s

1 hp = 76.04022591264 kgf•m/s

applying gravity constant

1 hp = 745.699872 N•m/s

by definition

1 ft = 0.3048 m

1 lb = 0.453592376 kg

we need kilowatts

1 kW = 1000 W

1 hp = 745.699872 N•m/s • (1/1000)

1 hp = 0.745699872 kW

Hp to kW Conversion Table

Horsepower

Kilowatts

Rounded Kilowatts

1 hp

0.745699872 kW

1 kW

5 hp

3.72849936 kW

4 kW

10 hp

7.45699872 kW

7 kW

15 hp

11.18549808 kW

11 kW

20 hp

14.91399744 kW

15 kW

25 hp

18.6424968 kW

19 kW

30 hp

22.37099616 kW

22 kW

35 hp

26.09949552 kW

26 kW

40 hp

29.82799488 kW

30 kW

45 hp

33.55649424 kW

34 kW

50 hp

37.2849936 kW

37 kW

55 hp

41.01349296 kW

41 kW

60 hp

44.74199232 kW

45 kW

65 hp

48.47049168 kW

48 kW

70 hp

52.19899104 kW

52 kW

75 hp

55.9274904 kW

56 kW

80 hp

59.65598976 kW

60 kW

85 hp

63.38448912 kW

63 kW

90 hp

67.11298848 kW

67 kW

95 hp

70.84148784 kW

71 kW

Horsepower

Kilowatts

Rounded Kilowatts

100 hp

74.5699872 kW

75 kW

105 hp

78.29848656 kW

78 kW

110 hp

82.02698592 kW

82 kW

115 hp

85.75548528 kW

86 kW

120 hp

89.48398464 kW

89 kW

125 hp

93.212484 kW

93 kW

130 hp

96.94098336 kW

97 kW

135 hp

100.66948272 kW

101 kW

140 hp

104.39798208 kW

104 kW

145 hp

108.12648144 kW

108 kW

150 hp

111.8549808 kW

112 kW

155 hp

115.58348016 kW

116 kW

160 hp

119.31197952 kW

119 kW

165 hp

123.04047888 kW

123 kW

170 hp

126.76897824 kW

127 kW

175 hp

130.4974776 kW

130 kW

180 hp

134.22597696 kW

134 kW

185 hp

137.95447632 kW

138 kW

190 hp

141.68297568 kW

142 kW

195 hp

145.41147504 kW

145 kW

200 hp

149.1399744 kW

149 kW

once you worked out your machine’s KW you can easily calculate per day consumption of electricity (KWh*no. of hours machine run time per shift * no of shifts per day*no days factory run in a month)*Electricity charges per KWH (unit)

you will get your machine’s electricity consumption cost which will be very helpful in determination of costing of products.